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The exchange of carbon dioxide and oxygen occurs in the alveoli. Each alveolus is surrounded by a network of small blood vessels. Like the alveoli, these small blood vessels have extremely thin walls. Blood that enters the vessels has a high level of carbon dioxide, which it picked up from the body tissues. It contains little oxygen. The carbon dioxide leaves the blood and moves through the walls of the blood vessels and alveoli into the lungs. Oxygen from the air in the lungs then passes through the walls of the alveoli and blood vessels and into the blood. The blood, now rich in oxygen, leaves the lungs and travels to the heart. The heart then pumps it to cells throughout the body. The carbon dioxide is finally expelled from the lungs when we exhale.

By ichigo kurosaki

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11y ago
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6mo ago

In the alveoli, oxygen from the inhaled air diffuses across the alveolar walls into the bloodstream, where it binds to hemoglobin in red blood cells. At the same time, carbon dioxide diffuses from the bloodstream into the alveoli to be exhaled. This gas exchange process occurs due to differences in partial pressures of oxygen and carbon dioxide between the alveoli and the blood.

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Q: Explain how gases are exchanged at the alveoli?
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Related questions

Which site is the site where gases are exchanged?

alveoli


The small air sacs in the lungs through which gases are exchanged are the?

Alveoli


Where are gases exchanged in the respiratory system?

carbon dioxide and oxygen


When gases are exchanged between the alveoli and blood what body systems are involved?

The respiratory and circulatory systems are involved in the exchange of gases between the alveoli and blood. The alveoli are part of the lungs, and their surrounding capillaries are part of the circulatory system.


What gases are exchanged in the repitory ystem?

Oxygen diffuses from the alveoli of the lungs into the blood. Carbon dioxide diffuses from the blood into the alveoli of the lung where is will be exhaled.


What gases are begin exchanged in the alveoli?

Oxygen and carbon dioxide are exchanged in the alveoli. Oxygen is taken up from inhaled air into the bloodstream, while carbon dioxide is released from the bloodstream into the alveoli to be exhaled.


Where is the site where Gases are exchanged?

Alveoli are site of gas exchange. Actual diffusion of gases occurs at interstitial space between capillaries and alveolar cells.


Gases are exchanged in the?

Gaseous exchange takes place in the alveoli in the lungs, Oxygen is inhaled while Carbon dioxide is exhaled.


Where are oxygen and carbon dioxide exchanged in the lungs?

oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).


Which substances are exchanged between the blood in the capillaries and the air in the alveoli?

Oxygen is exchanged from the air in the alveoli into the blood in the capillaries, while carbon dioxide is exchanged from the blood in the capillaries into the air in the alveoli during the process of respiration.


What are the small sacs in the lungs where carbon dioxide is exchanged for oxygen?

The humorus


What gases are exchanged in respiratory system?

The gases that are exchanged are oxygen and carbon dioxide.